Re: [PATCH] openrisc: define mb() as its mandatory

[Peter Zijlstra]

On Sat, Apr 07, 2018 at 05:58:49AM +0900, Stafford Horne wrote:
> Following Peter Z's patch ("asm-generic: Disallow no-op mb() for SMP
> systems") which makes mb() mandatory for SMP architectures we define it
> as l.msync.  On OpenRISC this will flush the current cores write buffer
> and trigger remote cores to invalidate their caches of the written
> memory.
> 
> Signed-off-by: Stafford Horne <shorne@xxxxxxxxx>
> Link: https://lkml.org/lkml/2018/1/31/254
> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>
> ---
> 
> Notes:
>   - Sorry, its been a while since we discussed this patch is the parent to this 
>     still going in Peter?

Oops.. yes it should. It seems I also lost track of it. Thanks for the
reminder!